Question

which is the common factor in all terms 3xy+15xy²+9xy²+21y³​

Answer 1

Answer:

3+15+9+21+xy+xy2+xy2+xy3

= 42+xy7

= 42xy7

Answer 2

Answer:

$xy^{2}$

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is common factor in the numbers given

because 3xy and +$21y^{3}$ are only once but $xy^{2}$ is 2 times